She was spotted leaving a pilates studio after getting her workout on.

Turns out that wasn't all she was doing… she fought for her buff bod! Literally!

After pilates, spinning and circuit training stopped being so effective, she turned to boxing to bust through her plateau!
Her trainer said:

"Her main love is boxing. We skip rope and run boxing intervals with one minute of rest between. It's important to find an activity you love so that you look forward to the workout. Hilary comes ready to train with a smile on her face because she loves the challenge of something new. She was really looking for a workout that was challenging and to be pushed to the limits of what she could do physically."

Back in July, McCain was at the Mayo Clinic in Phoenix for a routine check up when doctors found a blood clot in his left eye. The Republican was driving home when his doctor called and said he needed to turn around for emergency surgery to remove the clot.

It was days after the surgery when doctors told McCain he had glioblastoma, an aggressive form of brain cancer -- and his prognosis wasn't bright. He explained to CBS: